Just received my E-Tickets for a flight (holiday) I'm going on in May. I know I can take upto 4 Phantom batteries as hand luggage but was under the impression to have them discharged (not fully) for the flight (maximise safety). Below is an extract from some info I received with my tickets. I have been asked to switch on or show the electronic item is working before going through security but you don't need the battery fully charged for this. What do you guys do please? Dave "New Airport Security Measures For Electronic Gadgets If you're carrying any electronic gadgets in your hand luggage that are capable of holding a charge, you'll need to make sure they're fully charged when you go through airport security. This is part of new security measures that have been introduced by airports - both in the UK and abroad"